Per the Wayne Parry of the Associated Press, Portis' agreement with a Florida bankruptcy court requires him to pay the casino 10 percent of any income he makes over $30,000 through August 2021.
Portis was unable to cover the $200,000 credit he received from the Borgata in 2011, including having six different checks written to the casino bounce.
Steven Silton, one of Portis' lawyers, testified during Portis' bankruptcy hearing that his client thought he would have enough money to cover the debt.
"At that time, in January of 2011, my client was slated to make $8 million in the coming year," Stilton testified, per the AP. "He believed that his financial situation was very, very, very solid and that there was no question that he had more than enough financial capability."
Portis was under contract to the Washington Redskins at the time, but the team released him in February after he declined to restructure his deal.
After retiring from the NFL in 2012, Portis was forced to file for bankruptcy three years later with $4,857,659.50 owed to his creditors.
Portis had 9,923 rushing yards and 80 total touchdowns in nine seasons with the Denver Broncos and Redskins from 2002-10.